Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36340 | Centrifugally cast pipe | Charles S. Woodson, Michael J. Darnall | 1999-10-12 |
| 5346280 | Chair with automatic standing aid | — | 1994-09-13 |
| 5266370 | Centrifugally cast pipe | Charles S. Woodson, Michael J. Darnall | 1993-11-30 |